25332665563 has 2 divisors, whose sum is σ = 25332665564. Its totient is φ = 25332665562.

The previous prime is 25332665521. The next prime is 25332665599. The reversal of 25332665563 is 36556623352.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25332665563 is a prime.

It is a super-2 number, since 2×25332665563² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25332665503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12666332781 + 12666332782.

It is an arithmetic number, because the mean of its divisors is an integer number (12666332782).

Almost surely, 2^25332665563 is an apocalyptic number.

25332665563 is a deficient number, since it is larger than the sum of its proper divisors (1).

25332665563 is an equidigital number, since it uses as much as digits as its factorization.

25332665563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916000, while the sum is 46.

The spelling of 25332665563 in words is "twenty-five billion, three hundred thirty-two million, six hundred sixty-five thousand, five hundred sixty-three".